Peggy A. Shibata

Peggy A. Shibata, M.S., P.E.

Senior Consultant

Ms. Shibata is a Senior Consultant at ESi and offers a broad range of specialization in mechanical engineering and biomechanics. In particular, she possesses an understanding of how biomechanics can be a crucial consideration in claims and legal matters, as well as how biomechanics can be interrelated with other engineering disciplines. She is thorough and detail-oriented, is committed to providing sound technical expertise, and is dedicated to delivering a well-communicated product to ESi’s clients.

Ms. Shibata has expertise in the reconstruction of a wide range of accidents that have involved all types of vehicles, pedestrians, and bicyclists. Relevant human factors topics such as perception reaction time, available visual field of view, and night-time visibility have been critical elements of reconstructions. She has special knowledge of the standard method and established limits related to the dynamic characterization of roller coasters and has been directly involved in the field testing of multiple roller coasters around the country. Her experience lends itself to a greater appreciation of the general kinematic relationship between an occupant and a given mode of transport.

Ms. Shibata’s knowledge of rigid body dynamics, in conjunction with human anthropometry and capabilities, has aided in understanding likely accident event and injury sequences and potential contributory aspects. Her use of Injury analyses and established human injury tolerances has enabled her to address the likelihood of a claimed injury being causally related to particular accident specifics. She has provided technical assistance to clients on projects related to recreational activities and equipment, slips and trips, slip resistance, falls from ground level and from heights, and balance and aging. She has been involved in numerous surrogate studies that have aided in the characterization of human capabilities, tendencies, and motions during the performance of specific tasks.


  • Analysis of an Unexpected Impact to the Crown of the Head, Proceedings of the XXVIIIth Annual International Occupational Ergonomics and Safety Conference, June 2016
  • Human Factors Techniques in the Analysis of Low Illumination Accidents: Integrating Conspicuity, Validated Photography, and Scientific Animation, Proceedings of the Human Factors and Ergonomics Society 59th Annual Meeting, October 2015
  • Analysis of Nighttime Vehicular Collisions and the Application of Human Factors: An Integrated Approach, SAE Technical Paper, SAE International, January 2014
  • Age and Gender Moderate the Effects of Localized Muscle Fatigue on Lower Extremity Joint Torques Used During Quiet Stance, Human Movement Science, January 2011
  • Age and Gender Differences in the Effects of Localized Muscle Fatigue on Joint Torques Used During Bipedal Stance, Proceedings of the ASME 2009 Summer Bioengineering Conference, American Society of Mechanical Engineers, January 2009
  • Determining Angular Head Accelerations Using an External Array of Linear Accelerometers: A Preliminary Analysis of Everyday Activities, Proceedings of the 2005 Summer Bioengineering Conference, The American Society of Mechanical Engineers, January 2005
  • Kinematic Analyses of the 180 Degree Standing Turn: Effects of Age on Strategies Adopted by Healthy Young and Older Women, Gait and Posture, January 2005
  • Evidence of Age Effects on Standing Turn Strategies in Healthy Females, Program from the 56th Annual Scientific meeting of the Gerontological Society of America, The Gerontologist, January 2003
  • A Kinematic Analysis of Effects of Age on Standing Turn Execution in Health Females, Proceedings of the 27th Annual Meeting of the American Society of Biomechanics, January 2003

Project Experience

ESi's expertise spans dozens of industries and specializations organized across several practice groups, each staffed by dozens of in-house experts with the technical knowledge, hands-on expertise, and courtroom experience required to execute projects for and with our clients from start to finish.

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